Preheat oven to 180 C (350 F) standard / 160 C (320 F) fan-forced. Grease and line a baking square tin with baking paper. Lightly grease the inside of the paper with a little butter as well.
Sift flour, baking powder twice into a large mixing bowl. Set aside.In a separate mixing bowl, add eggs and start to beat using an electric whisk. Once the eggs start to go thick and foamy, add sugar, one tablespoon at a time.Continue to beat the eggs until they are thick and voluminous.

Meanwhile, add milk and butter to a small microwave-safe bowl and heat for 30 seconds or until butter is melted. Leave to cool slightly.
When the eggs are ready, gently add the sifted flour mixture, pour butter mixture down the side of the bowl and gently fold until flour is JUST combined. Do not over mix or you’ll mix all the air out of the eggs.
Add mixture to prepared cake tin. Bake for 20-23 minutes or until cake gently springs back. Leave to cool,refrigerating it for close to 2 hours.

To make the chocolate icing, sift cocoa powder and icing sugar. Add melted butter and milk and stir until chocolate is smooth.

Transfer to a cake rack to dry.Repeat with remaining cake squares. Serve on the same day with a smile and a lot of" warmth